Window latch



F. KILBERG WINDOW LATCH May 26, 1931.

Filed Nov. 26, 1928 INVENTOR 7 Frank .ifilbarg ATTORNEYS Patented May 26, 1931 FRANK KILBERG, F DETROIT, MICHIGAN WINDOW L'A'rcn Application filed November 26, 1928. Serial No. 321,859.

The present invention pertains to a novel Window latch designed to be carried by a.

sliding sash is a rotatable bolt, preferablycylindrical, and having one end of semicylindrical formation. Against one side of the sash is supported a strip having semicylindrical notches formed'in the face which is contiguous to the sash. By rotation of the bolt, the semi-cylindrical end thereof may be entered into or withdrawn from any of the notches; and by entering this end in any given notch, the position of the window is determined. When the sash is in closed position, the bolt is receivable in a notch, whereby the window may be effectively locked.

The invention is fully disclosed by way of example in the following description and 1n the accompanying drawings, in which Figure 1 is a fragmentary isometric perspective view of a construction according to the invention;

Fig. 2 is afragmentary perspective view of the sash; and

Fig. 3 is a perspective view of the bolt. Reference to these views will now be made by use of like characters which are employed to designate corresponding parts throughout. In Figure l is illustrated a window frame structure 1, designated in general by the numeral 1, including rails or strips 2 and 8 between which the sash slides. The strip 3 is so positioned as to have one ofthe edges or surfaces thereof abutting a side of the sash frame, whereby the surface 4 of the strip lies at right angles to the side or face 5, of the sash frame.

gether to the sash by. means of screws 8. Each such plate is formed with a semi-cylindrical depression 9 to provide a cylindrical 0 cavity 10 for a cylindrical bolt 11; It will be Inwardly of the strip 3 the sash frame carries a pair of plates 6 and 7 secured to seen in Figure 1 that the innerplate 7 is entirely embedded in the frame of the sash. The depression 9 in the other plate 6 has a transverse slot 12 receiving astem 13 extending from the bolt 11, whereby the bolt may be turned.

The end of the bolt nearer to the strip 3 is split or notched at 14 toprovide a semi-cylindrical end portion 15. The edge 16 of the strip 3 abutting the sash frame is formed with a series of semirylindrical notches 17 parallel to the bolt 11 and of the same radius. It will now be seenthat the bolt may be brought into alignment with anyone of the notches 17 and may be turned by the stem 13 to bring the reduced end 15 to either side of the abutting surfaces of the strip 3 and sash frame. When the reduced end is outwardof the surface of the sash frame, itenters and locks in the selectednotch' 17; but when displaced from this position, it lies beneath or inwardly of the side of the sash so that the flat surface of the reduced end 15 isadapted to slide past the notches 17.

I11 order that the weight of the sash shall not rest solely on the wooden strip 3, the latter is provided with a right angular strip 18 having a side 19 abutting the side of the sash frame. The metal strip is notched at 20 in coincidence with the notches 17 for admitting the reduced end 15 of the bolt. The weight of the sash is thus carried by the metallic strip.

One of the notches 17 is provided to receive the bolt end 15 when the sash is in closed position, so that the window may be effectively locked by means of this device.

Although a specific embodiment of the invention has been illustrated and described,

it will be understood that various alterations in thedetails'of construction may be made without departing from the scope of the in- V vention as indicated by the appended claims.-

What I claim is 1. In combination with a frame structure and amember slidable therein, said frame structure having a semi-cylindrical notch in one of the sides thereof along which said member slides, a bolt rotatably supported by said member, said bolt having a semi-cylindrical end portion adapted for insertion in and removal from said notch by rotation of said bolt.

2. In combination with a frame structure and a member slidable therein, said frame structure having a semi-cylindrical notch in one of the sides thereof along Which said member slides, a bolt rotatably supported by said member, said bolt having a semi-cylindrical end portion adapted for insertion in and removal from said notch by rotation of said bolt, and a reinforcing strip secured between said frame structure and member and having a notch coinciding with said first r. named notch.

8. In combination with a frame and a member slidable therein, a strip having a surface abutting one of the sides of said member, said strip having semi-cylindrical notches formed in said surface, a bolt rotatably supported by said member and having a semicylindri'cal end portion adapted for selective insertion in and removal from said notches by rotation of said bolt.

4. In combination with a frame and a member slidable therein, a strip having a surface abutting one of the sides of said member, said strip having semi-cylindrical notches formed in said surface, a bolt rotatably supported by said member and having a semi-cylindrical end portion adapted for selective insertion in and removal from said notches by rotation of said bolt, and a reinforcing strip secured along the notched surface of said first named strip and having notches coinciding with said first named notches.

In testimony whereof I aflix my signature.

FRANK KILBERQ. 

